Tag: Circuit

Graphene-based circuit yields clean, limitless power

Oct. 2 (UPI) — Scientists have developed a new graphene-based circuit capable of producing clean, limitless power. Researchers suggest the energy-harvesting circuit — described Friday in the journal Physical Review E — could be used to power small, low-voltage devices and sensors.

The circuit’s ability confirms the theory — developed by the study’s authors, a group of physicists at the University of Arkansas — that micron-sized sheets of freestanding graphene naturally move in a way conducive to energy harvesting.

The breakthrough also contradicts the assertion by Richard Feynman that so-called Brownian motion, the thermal motion of atoms, cannot perform work. But lab tests showed the Brownian motion of atoms in freestanding sheets of graphene can generate an alternating current.

Famously, physicist Léon Brillouin proved that a single diode, a one-way electrical gate, added to a circuit was not sufficient to turn Brownian motion into energy. The team of physicists at

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Metallic Carbon Circuit Element Enables Work on Faster, Efficient Carbon-Based Transistors

Atomic Structure of Metallic Graphene Nanoribbon

Scanning tunneling microscope image of wide-band metallic graphene nanoribbon (GNR). Each cluster of protrusions corresponds to a singly-occupied electron orbital. The formation of a pentagonal ring near each cluster leads to a more than tenfold increase in the conductivity of metallic GNRs. The GNR backbone has a width of 1.6 nanometers. Credit: UC Berkeley image by Daniel Rizzo

Metal wires of carbon complete toolbox for carbon-based computers.

Transistors based on carbon rather than silicon could potentially boost computers’ speed and cut their power consumption more than a thousandfold — think of a mobile phone that holds its charge for months — but the set of tools needed to build working carbon circuits has remained incomplete until now.

A team of chemists and physicists at the University of California, Berkeley, has finally created the last tool in the toolbox, a metallic wire made entirely of carbon, setting the stage for

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Qualcomm Found Guilty Of Aggressively Innovating By Ninth Circuit Court Of Appeals

Three weeks ago, Qualcomm won its battle with the FTC in the Ninth Circuit Court of Appeals. The court unanimously reversed the district court’s judgment (led by Judge Koh) and vacated its global injunction against the company’s business practices, which had forced it to license IP directly to its SOC and modem competitors. I have written a lot about the case since its inception and thought it was time to write about a few interesting aspects of the case. I believe one of the most notable things that came out of the case was the distinction between anticompetitive and hypercompetitive behavior.  

I am not a lawyer, but I have been involved over the past 30 years in some of the largest antitrust cases in technology, given my tenure at some of

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